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Electrical Circuit Flashover Model of Polluted Insulators under AC Voltage Based on the Arc Root Voltage Gradient Criterion

Author

Listed:
  • Qing Yang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China)

  • Rui Wang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China)

  • Wenxia Sima

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China)

  • Chilong Jiang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China)

  • Xing Lan

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China)

  • Markus Zahn

    (Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Laboratory for Electromagnetic and Electronic Systems, High Voltage Research Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA)

Abstract

In order to study the flashover mechanism of polluted insulators under AC voltage, a new arc propagation criterion which is based on an arc root voltage gradient is proposed. This criterion can explain the variation of the arc root voltage gradient in the arc propagation process. Based on this criterion, a new distributed parameter electrical circuit flashover model of polluted insulators is presented. The arc channel is considered as an equivalent distributed parameter circuit model instead of using the arc voltage-gradient equation. The parameters of the arc model are obtained from the electromagnetic field distribution of the arc and the gas discharge theories. The arc root is considered as parallel paths including the polluted layer. The variation of the voltage on the arc root is related to the capability of arc propagation. This model takes the microscopic mechanism of arc root ionization into consideration, which can improve the accuracy of the flashover model. The results obtained from the presented model are in good agreement with other mathematical and experimental results.

Suggested Citation

  • Qing Yang & Rui Wang & Wenxia Sima & Chilong Jiang & Xing Lan & Markus Zahn, 2012. "Electrical Circuit Flashover Model of Polluted Insulators under AC Voltage Based on the Arc Root Voltage Gradient Criterion," Energies, MDPI, vol. 5(3), pages 1-18, March.
    • Handle: RePEc:gam:jeners:v:5:y:2012:i:3:p:752-769:d:16690
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    Citations

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    Cited by:

    1. Xingliang Jiang & Quanlin Wang & Zhijing Zhang & Jianlin Hu & Qin Hu & Chengzhi Zhu, 2017. "Ion Migration in the Process of Water Freezing under Alternating Electric Field and Its Impact on Insulator Flashover," Energies, MDPI, vol. 10(1), pages 1-17, January.
    2. Jiazheng Lu & Pengkang Xie & Zhenglong Jiang & Zhen Fang & Wei Wu, 2018. "Voltage Distribution and Flashover Performance of 220 kV Composite Insulators under Different Icing Conditions," Energies, MDPI, vol. 11(3), pages 1-13, March.
    3. Marc-Alain Andoh & Kone Gbah & Christophe Volat, 2022. "Development of a Simple Experimental Setup for the Study of the Formation of Dry Bands on Composite Insulators," Energies, MDPI, vol. 15(14), pages 1-17, July.
    4. Luis Hernández-Callejo, 2019. "A Comprehensive Review of Operation and Control, Maintenance and Lifespan Management, Grid Planning and Design, and Metering in Smart Grids," Energies, MDPI, vol. 12(9), pages 1-50, April.

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